Correction of receent PR in mroonga for 10.5

Updated ha_mroonga::storage_check_if_supported_inplace_alter to support
new ALTER TABLE flags.

This fixes failing tests:
mroonga/storage.alter_table_add_index_unique_duplicated
mroonga/storage.alter_table_add_index_unique_multiple_column_duplicated

storage/mroonga/ha_mroonga.cpp

@@ -14623,7 +14623,9 @@ enum_alter_inplace_result ha_mroonga::storage_check_if_supported_inplace_alter(
     MRN_ALTER_INPLACE_INFO_ADD_VIRTUAL_COLUMN |
     MRN_ALTER_INPLACE_INFO_ADD_STORED_BASE_COLUMN |
     ALTER_DROP_COLUMN |
+    ALTER_INDEX_ORDER |
     ALTER_COLUMN_NAME;
+    ;
   if (ha_alter_info->handler_flags & explicitly_unsupported_flags) {
     DBUG_RETURN(HA_ALTER_INPLACE_NOT_SUPPORTED);
   } else if ((ha_alter_info->handler_flags & supported_flags) ==